I hope they avoid the physical buttons. I see that being too easy to hit while trying to write, which is what the Note series is all about: replacing pen and paper! I think they need to add options to placing the virtual bar on all Android tablets. I would like to lock it on the left side, so it's out of my way when I'm writing.
I would replace my 10.1 with this, as long as it's doesn't get too pricey. The 10.1 was my price limit for a tablet. Anything more, and I might as well buy a laptop that can actually run my CAD programs too. I looked at the Surface Pro, and that's exactly why I didn't get it.